The QS-2D50 from Clear Microwave, Inc is a 90 Degree Hybrid Coupler with Frequency 1 to 4 GHz, Average Power 50 W, Peak Power 3 kW, Insertion Loss 0.5 dB, Isolation 21 dB. Tags: Module with Connectors, Multi-Octave Band Coupler. More details for QS-2D50 can be seen below.